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Article

Study of the Effect of Y2O3 Doping on the Resistance to Radiation Damage of CeO2 Microparticles under Irradiation with Heavy Xe22+ Ions

by
Igor A. Ivanov
1,2,
Ruslan M. Rspayev
2,
Aset D. Sapar
1,
Daulet A. Mustafin
1,
Maxim V. Zdorovets
1,2,3 and
Artem L. Kozlovskiy
1,4,*
1
Laboratory of Solid State Physics, The Institute of Nuclear Physics, Almaty 050032, Kazakhstan
2
Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, Kazakhstan
3
Department of Intelligent Information Technologies, Ural Federal University, 620075 Yekaterinburg, Russia
4
Institute of Geology and Oil and Gas Business, Satbayev University, Almaty 050032, Kazakhstan
*
Author to whom correspondence should be addressed.
Crystals 2021, 11(12), 1459; https://doi.org/10.3390/cryst11121459
Submission received: 25 October 2021 / Revised: 12 November 2021 / Accepted: 22 November 2021 / Published: 25 November 2021
(This article belongs to the Section Crystalline Metals and Alloys)
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Abstract

This paper presents the results of a study on the influence of Y2O3 doping on the resistance to radiation damage and an assessment of structural changes associated with the accumulation of radiation defects in CeO2 microparticles under irradiation with heavy Xe22+ ions. The relevance of this study consists of the prospects for the use of CeO2 microparticles as materials and candidates of inert matrices of nuclear fuel. A method of solid-phase synthesis was applied to obtain microparticles with different concentrations of dopant. It included grinding of CeO2 and Y2O3 microparticles followed by thermal sintering at 1100 °C in an oxygen-containing medium to produce highly ordered microparticles. During the study of the structural characteristics of the synthesized microparticles, it was found that increasing the dopant concentration from 0.05 mol.% to 0.15 mol.% leads to an increase in the crystallinity degree as well as a decrease in dislocation density. According to the results of the assessment of the resistance of microparticles to radiation damage, it was found that an increase in the dopant concentration leads to a decrease in swelling and structural distortion by more than 2.5–3 times, which indicates an increase in the radiation resistance.
Keywords: radiation damage; microparticles; heavy ion irradiation; stability; structural properties radiation damage; microparticles; heavy ion irradiation; stability; structural properties

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MDPI and ACS Style

Ivanov, I.A.; Rspayev, R.M.; Sapar, A.D.; Mustafin, D.A.; Zdorovets, M.V.; Kozlovskiy, A.L. Study of the Effect of Y2O3 Doping on the Resistance to Radiation Damage of CeO2 Microparticles under Irradiation with Heavy Xe22+ Ions. Crystals 2021, 11, 1459. https://doi.org/10.3390/cryst11121459

AMA Style

Ivanov IA, Rspayev RM, Sapar AD, Mustafin DA, Zdorovets MV, Kozlovskiy AL. Study of the Effect of Y2O3 Doping on the Resistance to Radiation Damage of CeO2 Microparticles under Irradiation with Heavy Xe22+ Ions. Crystals. 2021; 11(12):1459. https://doi.org/10.3390/cryst11121459

Chicago/Turabian Style

Ivanov, Igor A., Ruslan M. Rspayev, Aset D. Sapar, Daulet A. Mustafin, Maxim V. Zdorovets, and Artem L. Kozlovskiy. 2021. "Study of the Effect of Y2O3 Doping on the Resistance to Radiation Damage of CeO2 Microparticles under Irradiation with Heavy Xe22+ Ions" Crystals 11, no. 12: 1459. https://doi.org/10.3390/cryst11121459

APA Style

Ivanov, I. A., Rspayev, R. M., Sapar, A. D., Mustafin, D. A., Zdorovets, M. V., & Kozlovskiy, A. L. (2021). Study of the Effect of Y2O3 Doping on the Resistance to Radiation Damage of CeO2 Microparticles under Irradiation with Heavy Xe22+ Ions. Crystals, 11(12), 1459. https://doi.org/10.3390/cryst11121459

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